Hmm, I agree if it does make a balance problem in multiplayer (which is why I was suggesting in skirmish only, without knowing that it cannot be done).
Although I would say that coolness, as well as stupid changes, something classified as unnecessary, is relative to ones taste or opinion on the matter.
For one, I think adding voice overs are unnecessary, but of course some people will think otherwise.
I think changing the bit of Clairvoyant death animation is necessary, but others will think it's nothing. (and probably not knowing that it can't be done unless someone says so)
Others think Inferno Tower needs a new visual for its projectile, but I don't think that's necessary (which I believe end up changed in 3.3.3)
I do believe, if you open a public thread for suggestions, which means you want inputs from newbies and non beta testers, you should be ready for those stupid and unnecessary ones. You are not allowed to complain about stupid suggestions being made, otherwise it was a mistake in the first place to make this thread public.
You cannot expect no one will stupidly post a ridiculous suggestion on a public thread. If you want professional suggestions only, make it so that only trusted members who understands how the engine works can suggest in this thread. Problem solved. Less headache. Everyone happy.